Struct TransformerAdaptor 

pub struct TransformerAdaptor {
    pub port_resistance: f64,
    /* private fields */
}

Ideal transformer adaptor for WDF trees.

Models an ideal transformer with turns ratio n (primary:secondary = n:1). The primary port faces the root (reflection-free), secondary faces child subtree.

Transformer relations:

• Voltage ratio: V₁/V₂ = n
• Current ratio: I₁/I₂ = 1/n
• Power: V₁·I₁ = V₂·I₂ (lossless)

WDF port resistance transformation:

• R_primary = n² × R_secondary

Scattering (primary adapted, S₁₁=0):

• scatter_up: b₁ = n·b₂
• scatter_down: a₂ = a₁/n

For a step-down transformer (n > 1): voltage decreases, current increases. For a step-up transformer (n < 1): voltage increases, current decreases.

Fields

port_resistance: f64

Port resistance seen from primary (root direction) = n² × R_secondary

Implementations

impl TransformerAdaptor

pub fn new( turns_ratio: f64, secondary_port_resistance: f64, ) -> TransformerAdaptor

Create a transformer adaptor.

• turns_ratio — n = primary turns / secondary turns (e.g., 10.0 for 10:1 step-down)
• secondary_port_resistance — port resistance of the secondary side subtree

pub fn update_secondary(&mut self, secondary_port_resistance: f64)

Update when secondary subtree port resistance changes.

pub fn set_turns_ratio( &mut self, turns_ratio: f64, secondary_port_resistance: f64, )

Update turns ratio (for variable transformers / tap switching).

pub fn turns_ratio(&self) -> f64

Get current turns ratio.

pub fn scatter_up(&mut self, b2: f64) -> f64

scatter_up: secondary (child) sends b₂, produce b₁ to primary (parent/root).

Voltage is scaled up by turns ratio: V₁ = n·V₂

pub fn scatter_down(&self, a1: f64) -> f64

scatter_down: primary (parent) sends a₁, produce a₂ to secondary (child).

Voltage is scaled down by turns ratio: V₂ = V₁/n

pub fn reset(&mut self)

Reset state.

Trait Implementations

impl Clone for TransformerAdaptor

fn clone(&self) -> TransformerAdaptor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TransformerAdaptor

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.